Malicious PDF — malware analysis report

Static analysis result for SHA-256 3775eab563744326…

MALICIOUS

PDF

36.3 KB Created: 2021-06-20 22:25:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 59f49b8632fa8d82491b92b158ced7bb SHA-1: a158bf1843687ab755a23c7dc80207ee2584f0e1 SHA-256: 3775eab563744326946e7dca2b1f48ec8ff84006ec623f6b50253b5ae517ad00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The document body and embedded URLs suggest a lure to trick users into downloading further malicious content or visiting compromised websites. No scripts were extracted, but the presence of malicious links and the 'game hack' lure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/free-robux-advertisement-game-hack In PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-get-free-robux-2021-generator_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/pubg-uc-seagm_GM1330123889.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/robux-sites_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D9 23308 bytes
SHA-256: 2e2d60b3cfbd5a193bb57aba529e0161a98dc343239ce035079fe7ee7d6cb5a0
font_01_sfnt_off00006773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6773 19488 bytes
SHA-256: 60bc1518621eceaf254bce4d6a093685a6e535f3cc1e8810e9ef3d0a47a90300

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